Abstract
SINCE Doncaster's preliminary work in 19061, nothing has been recorded on the maturation of the thelytokously parthenogenetic Tenthredinidæ. This author concluded that the chromosome number in the oocyte, polar nuclei and egg pronucleus was 8, and that there were two maturation divisions giving rise to an egg pronucleus and three polar nuclei2. Recent work on the species Pristiphora pallipes Lep., by our colleague, Mr. L. C. Comrie, raises strong doubts regarding Doncaster's interpretations on chromosome number and behaviour, but confirms him regarding the number of maturation divisions and polar nuclei.
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References
Doncaster, L., Quart. J. Micro. Soc., 49 (1906). (These species, vide Enslin, Beihefte Deut. Entom. Z., 1918, are: Empria abdominalis F., E. pulverata Retz., Croesus varus Vill., Hemichroa crocea Geoffr.)
Doncaster, L., Quart. J. Micro. Soc., 51 (1907).
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PEACOCK, A., SANDERSON, A. Maturation in the Thelytokously Parthenogenetic Tenthredinidæ. Nature 140, 240–241 (1937). https://doi.org/10.1038/1402740b0
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DOI: https://doi.org/10.1038/1402740b0
